Tools & Wizards About Us
davidpetersson.com screenshot

Report Summary

  • 87

    Performance

    Renders faster than
    89% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

davidpetersson.com

潘德伟 David Petersson\'s thoughts on MBA studies & management in China

Page Load Speed

4.9 sec in total

First Response

1.9 sec

Resources Loaded

2.7 sec

Page Rendered

310 ms

davidpetersson.com screenshot

About Website

Click here to check amazing David Petersson content. Otherwise, check out these important facts you probably never knew about davidpetersson.com

David Petersson has 25 years of manufacturing and management experience in China. He loves China, speaks fluent Mandarin Chinese, and considers himself multicultural. Over the years, he has gained exp...

Visit davidpetersson.com

Key Findings

We analyzed Davidpetersson.com page load time and found that the first response time was 1.9 sec and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

davidpetersson.com performance score

87

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

82/100

25%

SI (Speed Index)

Value5.0 s

64/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.9 s

96/100

10%

Network Requests Diagram

www.davidpetersson.com

1883 ms

wp-emoji-release.min.js

85 ms

style.min.css

145 ms

classic-themes.min.css

139 ms

jquery.min.js

207 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that all of those requests were addressed to Davidpetersson.com and no external sources were called. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Davidpetersson.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 95.9 kB (36%)

Content Size

268.6 kB

After Optimization

172.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Davidpetersson.com main page is 268.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. Images take 110.3 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 77.5 kB

  • Original 96.9 kB
  • After minification 95.0 kB
  • After compression 19.3 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 77.5 kB or 80% of the original size.

Image Optimization

-14%

Potential reduce by 15.8 kB

  • Original 110.3 kB
  • After minification 94.5 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, David Petersson needs image optimization as it can save up to 15.8 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-4%

Potential reduce by 1.9 kB

  • Original 46.4 kB
  • After minification 46.4 kB
  • After compression 44.5 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.

CSS Optimization

-4%

Potential reduce by 575 B

  • Original 15.0 kB
  • After minification 15.0 kB
  • After compression 14.4 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Davidpetersson.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 7 (35%)

Requests Now

20

After Optimization

13

  • Images
  • JavaScript
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of David Petersson. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.davidpetersson.com

www.davidpetersson.com

1883 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

85 ms

style.min.css

style.min.css

145 ms

classic-themes.min.css

classic-themes.min.css

139 ms

jquery.min.js

jquery.min.js

207 ms

jquery-migrate.min.js

jquery-migrate.min.js

152 ms

DD_roundies.js

DD_roundies.js

148 ms

wassup-widget.css

wassup-widget.css

151 ms

plugin.css

plugin.css

205 ms

datatables.css

datatables.css

224 ms

comment-gray.png

comment-gray.png

69 ms

rss-gray.png

rss-gray.png

69 ms

inputbackgr.gif

inputbackgr.gif

69 ms

3-IMG_1496.jpg

3-IMG_1496.jpg

184 ms

comment-gray.gif

comment-gray.gif

66 ms

folder-gray.gif

folder-gray.gif

70 ms

%E5%85%AC%E5%8F%B8%E8%AE%BE%E7%AB%8B-g%C5%8Dngs%C4%AB-sh%C3%A8l%C3%AC-Incorporation-150x76.png

%E5%85%AC%E5%8F%B8%E8%AE%BE%E7%AB%8B-g%C5%8Dngs%C4%AB-sh%C3%A8l%C3%AC-Incorporation-150x76.png

144 ms

pinyin-150x143.png

pinyin-150x143.png

139 ms

idiom-150x150.png

idiom-150x150.png

142 ms

TOCFL-150x57.png

TOCFL-150x57.png

143 ms

HSK-150x60.png

HSK-150x60.png

143 ms

Accessibility Review

davidpetersson.com accessibility score

79

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Form elements do not have associated labels

Best Practices

davidpetersson.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

davidpetersson.com SEO score

79

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Davidpetersson.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Davidpetersson.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

davidpetersson.com

Open Graph data is detected on the main page of David Petersson. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: